Building reserves question

[Sunny Sopapunta]

If you're able to save up one year of reserves for your property, do you take anything you make after that and put it in savings (for other new property opportunities) or just keep building up that property's reserve? 

For Example, if you estimate that one year's worth of reserves for a property is 15K and you save that much, do you take everything the property makes and move it to something else? Or keep the reserves going higher because you never know what kind of big ticket issues may come up?